/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Haystack Software Inc. All rights reserved.
 *  Licensed under the PolyForm Strict License 1.0.0. See License.txt in the project root for
 *  license information.
 *--------------------------------------------------------------------------------------------*/

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See code-license.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

import {
  DECREASE_HOVER_VERBOSITY_ACTION_ID,
  DECREASE_HOVER_VERBOSITY_ACTION_LABEL,
  GO_TO_BOTTOM_HOVER_ACTION_ID,
  GO_TO_TOP_HOVER_ACTION_ID,
  INCREASE_HOVER_VERBOSITY_ACTION_ID,
  INCREASE_HOVER_VERBOSITY_ACTION_LABEL,
  PAGE_DOWN_HOVER_ACTION_ID,
  PAGE_UP_HOVER_ACTION_ID,
  SCROLL_DOWN_HOVER_ACTION_ID,
  SCROLL_LEFT_HOVER_ACTION_ID,
  SCROLL_RIGHT_HOVER_ACTION_ID,
  SCROLL_UP_HOVER_ACTION_ID,
  SHOW_DEFINITION_PREVIEW_HOVER_ACTION_ID,
  SHOW_OR_FOCUS_HOVER_ACTION_ID,
} from "vs/editor/contrib/hover/browser/hoverActionIds"
import { KeyChord, KeyCode, KeyMod } from "vs/base/common/keyCodes"
import { ICodeEditor } from "vs/editor/browser/editorBrowser"
import {
  EditorAction,
  ServicesAccessor,
} from "vs/editor/browser/editorExtensions"
import { EditorOption } from "vs/editor/common/config/editorOptions"
import { Range } from "vs/editor/common/core/range"
import { EditorContextKeys } from "vs/editor/common/editorContextKeys"
import { GotoDefinitionAtPositionEditorContribution } from "vs/editor/contrib/gotoSymbol/browser/link/goToDefinitionAtPosition"
import {
  HoverStartMode,
  HoverStartSource,
} from "vs/editor/contrib/hover/browser/hoverOperation"
import { AccessibilitySupport } from "vs/platform/accessibility/common/accessibility"
import { KeybindingWeight } from "vs/platform/keybinding/common/keybindingsRegistry"
import { HoverController } from "vs/editor/contrib/hover/browser/hoverController"
import { HoverVerbosityAction } from "vs/editor/common/languages"
import * as nls from "vs/nls"
import "vs/css!./hover"

enum HoverFocusBehavior {
  NoAutoFocus = "noAutoFocus",
  FocusIfVisible = "focusIfVisible",
  AutoFocusImmediately = "autoFocusImmediately",
}

export class ShowOrFocusHoverAction extends EditorAction {
  constructor() {
    super({
      id: SHOW_OR_FOCUS_HOVER_ACTION_ID,
      label: nls.localize(
        {
          key: "showOrFocusHover",
          comment: [
            "Label for action that will trigger the showing/focusing of a hover in the editor.",
            "If the hover is not visible, it will show the hover.",
            "This allows for users to show the hover without using the mouse.",
          ],
        },
        "Show or Focus Hover",
      ),
      metadata: {
        description: nls.localize2(
          "showOrFocusHoverDescription",
          "Show or focus the editor hover which shows documentation, references, and other content for a symbol at the current cursor position.",
        ),
        args: [
          {
            name: "args",
            schema: {
              type: "object",
              properties: {
                focus: {
                  description:
                    "Controls if and when the hover should take focus upon being triggered by this action.",
                  enum: [
                    HoverFocusBehavior.NoAutoFocus,
                    HoverFocusBehavior.FocusIfVisible,
                    HoverFocusBehavior.AutoFocusImmediately,
                  ],
                  enumDescriptions: [
                    nls.localize(
                      "showOrFocusHover.focus.noAutoFocus",
                      "The hover will not automatically take focus.",
                    ),
                    nls.localize(
                      "showOrFocusHover.focus.focusIfVisible",
                      "The hover will take focus only if it is already visible.",
                    ),
                    nls.localize(
                      "showOrFocusHover.focus.autoFocusImmediately",
                      "The hover will automatically take focus when it appears.",
                    ),
                  ],
                  default: HoverFocusBehavior.FocusIfVisible,
                },
              },
            },
          },
        ],
      },
      alias: "Show or Focus Hover",
      precondition: undefined,
      kbOpts: {
        kbExpr: EditorContextKeys.editorTextFocus,
        primary: KeyChord(
          KeyMod.CtrlCmd | KeyCode.KeyK,
          KeyMod.CtrlCmd | KeyCode.KeyI,
        ),
        weight: KeybindingWeight.EditorContrib,
      },
    })
  }

  public run(accessor: ServicesAccessor, editor: ICodeEditor, args: any): void {
    if (!editor.hasModel()) {
      return
    }

    const controller = HoverController.get(editor)
    if (!controller) {
      return
    }

    const focusArgument = args?.focus
    let focusOption = HoverFocusBehavior.FocusIfVisible
    if (Object.values(HoverFocusBehavior).includes(focusArgument)) {
      focusOption = focusArgument
    } else if (typeof focusArgument === "boolean" && focusArgument) {
      focusOption = HoverFocusBehavior.AutoFocusImmediately
    }

    const showContentHover = (focus: boolean) => {
      const position = editor.getPosition()
      const editRange = editor.getEditRange()
      const lineNumberAdjust = editRange != null ? editRange.startLineNumber - 1 : 0

      const range = new Range(
        position.lineNumber + lineNumberAdjust,
        position.column,
        position.lineNumber + lineNumberAdjust,
        position.column,
      )
      controller.showContentHover(
        range,
        HoverStartMode.Immediate,
        HoverStartSource.Keyboard,
        focus,
      )
    }

    const accessibilitySupportEnabled =
      editor.getOption(EditorOption.accessibilitySupport) ===
      AccessibilitySupport.Enabled

    if (controller.isHoverVisible) {
      if (focusOption !== HoverFocusBehavior.NoAutoFocus) {
        controller.focus()
      } else {
        showContentHover(accessibilitySupportEnabled)
      }
    } else {
      showContentHover(
        accessibilitySupportEnabled ||
        focusOption === HoverFocusBehavior.AutoFocusImmediately,
      )
    }
  }
}

export class ShowDefinitionPreviewHoverAction extends EditorAction {
  constructor() {
    super({
      id: SHOW_DEFINITION_PREVIEW_HOVER_ACTION_ID,
      label: nls.localize(
        {
          key: "showDefinitionPreviewHover",
          comment: [
            "Label for action that will trigger the showing of definition preview hover in the editor.",
            "This allows for users to show the definition preview hover without using the mouse.",
          ],
        },
        "Show Definition Preview Hover",
      ),
      alias: "Show Definition Preview Hover",
      precondition: undefined,
      metadata: {
        description: nls.localize2(
          "showDefinitionPreviewHoverDescription",
          "Show the definition preview hover in the editor.",
        ),
      },
    })
  }

  public run(accessor: ServicesAccessor, editor: ICodeEditor): void {
    const controller = HoverController.get(editor)
    if (!controller) {
      return
    }
    const position = editor.getPosition()

    if (!position) {
      return
    }

    const range = new Range(
      position.lineNumber,
      position.column,
      position.lineNumber,
      position.column,
    )
    const goto = GotoDefinitionAtPositionEditorContribution.get(editor)
    if (!goto) {
      return
    }

    const promise = goto.startFindDefinitionFromCursor(position)
    promise.then(() => {
      controller.showContentHover(
        range,
        HoverStartMode.Immediate,
        HoverStartSource.Keyboard,
        true,
      )
    })
  }
}

export class ScrollUpHoverAction extends EditorAction {
  constructor() {
    super({
      id: SCROLL_UP_HOVER_ACTION_ID,
      label: nls.localize(
        {
          key: "scrollUpHover",
          comment: [
            "Action that allows to scroll up in the hover widget with the up arrow when the hover widget is focused.",
          ],
        },
        "Scroll Up Hover",
      ),
      alias: "Scroll Up Hover",
      precondition: EditorContextKeys.hoverFocused,
      kbOpts: {
        kbExpr: EditorContextKeys.hoverFocused,
        primary: KeyCode.UpArrow,
        weight: KeybindingWeight.EditorContrib,
      },
      metadata: {
        description: nls.localize2(
          "scrollUpHoverDescription",
          "Scroll up the editor hover.",
        ),
      },
    })
  }

  public run(accessor: ServicesAccessor, editor: ICodeEditor): void {
    const controller = HoverController.get(editor)
    if (!controller) {
      return
    }
    controller.scrollUp()
  }
}

export class ScrollDownHoverAction extends EditorAction {
  constructor() {
    super({
      id: SCROLL_DOWN_HOVER_ACTION_ID,
      label: nls.localize(
        {
          key: "scrollDownHover",
          comment: [
            "Action that allows to scroll down in the hover widget with the up arrow when the hover widget is focused.",
          ],
        },
        "Scroll Down Hover",
      ),
      alias: "Scroll Down Hover",
      precondition: EditorContextKeys.hoverFocused,
      kbOpts: {
        kbExpr: EditorContextKeys.hoverFocused,
        primary: KeyCode.DownArrow,
        weight: KeybindingWeight.EditorContrib,
      },
      metadata: {
        description: nls.localize2(
          "scrollDownHoverDescription",
          "Scroll down the editor hover.",
        ),
      },
    })
  }

  public run(accessor: ServicesAccessor, editor: ICodeEditor): void {
    const controller = HoverController.get(editor)
    if (!controller) {
      return
    }
    controller.scrollDown()
  }
}

export class ScrollLeftHoverAction extends EditorAction {
  constructor() {
    super({
      id: SCROLL_LEFT_HOVER_ACTION_ID,
      label: nls.localize(
        {
          key: "scrollLeftHover",
          comment: [
            "Action that allows to scroll left in the hover widget with the left arrow when the hover widget is focused.",
          ],
        },
        "Scroll Left Hover",
      ),
      alias: "Scroll Left Hover",
      precondition: EditorContextKeys.hoverFocused,
      kbOpts: {
        kbExpr: EditorContextKeys.hoverFocused,
        primary: KeyCode.LeftArrow,
        weight: KeybindingWeight.EditorContrib,
      },
      metadata: {
        description: nls.localize2(
          "scrollLeftHoverDescription",
          "Scroll left the editor hover.",
        ),
      },
    })
  }

  public run(accessor: ServicesAccessor, editor: ICodeEditor): void {
    const controller = HoverController.get(editor)
    if (!controller) {
      return
    }
    controller.scrollLeft()
  }
}

export class ScrollRightHoverAction extends EditorAction {
  constructor() {
    super({
      id: SCROLL_RIGHT_HOVER_ACTION_ID,
      label: nls.localize(
        {
          key: "scrollRightHover",
          comment: [
            "Action that allows to scroll right in the hover widget with the right arrow when the hover widget is focused.",
          ],
        },
        "Scroll Right Hover",
      ),
      alias: "Scroll Right Hover",
      precondition: EditorContextKeys.hoverFocused,
      kbOpts: {
        kbExpr: EditorContextKeys.hoverFocused,
        primary: KeyCode.RightArrow,
        weight: KeybindingWeight.EditorContrib,
      },
      metadata: {
        description: nls.localize2(
          "scrollRightHoverDescription",
          "Scroll right the editor hover.",
        ),
      },
    })
  }

  public run(accessor: ServicesAccessor, editor: ICodeEditor): void {
    const controller = HoverController.get(editor)
    if (!controller) {
      return
    }
    controller.scrollRight()
  }
}

export class PageUpHoverAction extends EditorAction {
  constructor() {
    super({
      id: PAGE_UP_HOVER_ACTION_ID,
      label: nls.localize(
        {
          key: "pageUpHover",
          comment: [
            "Action that allows to page up in the hover widget with the page up command when the hover widget is focused.",
          ],
        },
        "Page Up Hover",
      ),
      alias: "Page Up Hover",
      precondition: EditorContextKeys.hoverFocused,
      kbOpts: {
        kbExpr: EditorContextKeys.hoverFocused,
        primary: KeyCode.PageUp,
        secondary: [KeyMod.Alt | KeyCode.UpArrow],
        weight: KeybindingWeight.EditorContrib,
      },
      metadata: {
        description: nls.localize2(
          "pageUpHoverDescription",
          "Page up the editor hover.",
        ),
      },
    })
  }

  public run(accessor: ServicesAccessor, editor: ICodeEditor): void {
    const controller = HoverController.get(editor)
    if (!controller) {
      return
    }
    controller.pageUp()
  }
}

export class PageDownHoverAction extends EditorAction {
  constructor() {
    super({
      id: PAGE_DOWN_HOVER_ACTION_ID,
      label: nls.localize(
        {
          key: "pageDownHover",
          comment: [
            "Action that allows to page down in the hover widget with the page down command when the hover widget is focused.",
          ],
        },
        "Page Down Hover",
      ),
      alias: "Page Down Hover",
      precondition: EditorContextKeys.hoverFocused,
      kbOpts: {
        kbExpr: EditorContextKeys.hoverFocused,
        primary: KeyCode.PageDown,
        secondary: [KeyMod.Alt | KeyCode.DownArrow],
        weight: KeybindingWeight.EditorContrib,
      },
      metadata: {
        description: nls.localize2(
          "pageDownHoverDescription",
          "Page down the editor hover.",
        ),
      },
    })
  }

  public run(accessor: ServicesAccessor, editor: ICodeEditor): void {
    const controller = HoverController.get(editor)
    if (!controller) {
      return
    }
    controller.pageDown()
  }
}

export class GoToTopHoverAction extends EditorAction {
  constructor() {
    super({
      id: GO_TO_TOP_HOVER_ACTION_ID,
      label: nls.localize(
        {
          key: "goToTopHover",
          comment: [
            "Action that allows to go to the top of the hover widget with the home command when the hover widget is focused.",
          ],
        },
        "Go To Top Hover",
      ),
      alias: "Go To Bottom Hover",
      precondition: EditorContextKeys.hoverFocused,
      kbOpts: {
        kbExpr: EditorContextKeys.hoverFocused,
        primary: KeyCode.Home,
        secondary: [KeyMod.CtrlCmd | KeyCode.UpArrow],
        weight: KeybindingWeight.EditorContrib,
      },
      metadata: {
        description: nls.localize2(
          "goToTopHoverDescription",
          "Go to the top of the editor hover.",
        ),
      },
    })
  }

  public run(accessor: ServicesAccessor, editor: ICodeEditor): void {
    const controller = HoverController.get(editor)
    if (!controller) {
      return
    }
    controller.goToTop()
  }
}

export class GoToBottomHoverAction extends EditorAction {
  constructor() {
    super({
      id: GO_TO_BOTTOM_HOVER_ACTION_ID,
      label: nls.localize(
        {
          key: "goToBottomHover",
          comment: [
            "Action that allows to go to the bottom in the hover widget with the end command when the hover widget is focused.",
          ],
        },
        "Go To Bottom Hover",
      ),
      alias: "Go To Bottom Hover",
      precondition: EditorContextKeys.hoverFocused,
      kbOpts: {
        kbExpr: EditorContextKeys.hoverFocused,
        primary: KeyCode.End,
        secondary: [KeyMod.CtrlCmd | KeyCode.DownArrow],
        weight: KeybindingWeight.EditorContrib,
      },
      metadata: {
        description: nls.localize2(
          "goToBottomHoverDescription",
          "Go to the bottom of the editor hover.",
        ),
      },
    })
  }

  public run(accessor: ServicesAccessor, editor: ICodeEditor): void {
    const controller = HoverController.get(editor)
    if (!controller) {
      return
    }
    controller.goToBottom()
  }
}

export class IncreaseHoverVerbosityLevel extends EditorAction {
  constructor() {
    super({
      id: INCREASE_HOVER_VERBOSITY_ACTION_ID,
      label: INCREASE_HOVER_VERBOSITY_ACTION_LABEL,
      alias: "Increase Hover Verbosity Level",
      precondition: EditorContextKeys.hoverVisible,
    })
  }

  public run(
    accessor: ServicesAccessor,
    editor: ICodeEditor,
    args?: { index: number; focus: boolean },
  ): void {
    HoverController.get(editor)?.updateMarkdownHoverVerbosityLevel(
      HoverVerbosityAction.Increase,
      args?.index,
      args?.focus,
    )
  }
}

export class DecreaseHoverVerbosityLevel extends EditorAction {
  constructor() {
    super({
      id: DECREASE_HOVER_VERBOSITY_ACTION_ID,
      label: DECREASE_HOVER_VERBOSITY_ACTION_LABEL,
      alias: "Decrease Hover Verbosity Level",
      precondition: EditorContextKeys.hoverVisible,
    })
  }

  public run(
    accessor: ServicesAccessor,
    editor: ICodeEditor,
    args?: { index: number; focus: boolean },
  ): void {
    HoverController.get(editor)?.updateMarkdownHoverVerbosityLevel(
      HoverVerbosityAction.Decrease,
      args?.index,
      args?.focus,
    )
  }
}
